English chemist Dorothy Hodgkin was born #OTD in 1910.
Among her most influential discoveries are the confirmation of the structure of penicillin as previously surmised by Edward Abraham and Ernst Boris Chain; and mapping the structure of vitamin B12, for which in 1964 she became the third woman to win the Nobel Prize in Chemistry. Hodgkin also elucidated the structure of insulin in 1969 after 35 years of work.
«Une tempête solaire d'une violence inouïe est passée à côté de la Terre en 2012. Elle aurait pu "renvoyer la civilisation contemporaine au XVIIIe siècle" si elle avait atteint notre planète, selon la Nasa»
Aurora colors come from atoms that are trying to shed some of their energy.
In very thin air, oxygen survives in a delicate, high-energy state that emits green light. In denser air, atomic collisions knock oxygen to a lower-energy state that emits red. Nitrogen is a robust emitter that glows bright in even lower, denser layers of the atmosphere.
Scientists may have found a way to make biodegradable plastic from algae, a development that could potentially diminish the harmful effects of microplastics that linger for thousands of years. ABC News reports: https://flip.it/mizbsY #Science#Plastics#Environment
Van De Graaff (VDG) Generator kit - V2 - 150mm - 40,000V of sparky fun.
The 150mm Van De Graaff kit is designed for kids (or adults) to learn about "static" electricity by actually building a working device. A small High voltage generator that will achieve 30,000 to 40,000 volts of "static" electricity. The 150mm van De Graaff generator is a complete Van de Graaff system, comprising of a Polished Stainless Steel Dome, a high speed motor, dissimil... Read More #kits#makers#stem#science
This week on #SETILive, communications specialist Beth Johnson chatted with Dr. Tom Esposito, SETI researcher and Lead of the Unistellar Cosmic Cataclysms program, about the impending nova of T Coronae Borealis and the scientific efforts to catch it!
Do any of you do video editing ... perhaps for a podcast or maybe personal home videos? If so, what is the best, most easily used video editing software out there?
I don't need all the bells & whistles, but will need features like splicing video segments (from diff't sources) together, some nice (not over the top) transitions, ease of use, & good quality end results.
An interesting article on the time line of the universe.
The Universe passed through many epochs, from free quarks and gluons to stable protons and neutrons to neutral atoms to stars, galaxies, planets, and more. The precise time at which these various epochs occurred, including the (current) dark energy-dominated era, can be pinpointed with precision. Here’s how we know.
I’m going to do a longer video/newsletter on this Monday but here is why you might have been seeing the Northern Lights yesterday (and if you’ll see them again this weekend)
American astronomer Walter Sydney Adams died #OTD in 1956.
One of Adams' most notable achievements was his collaboration with the astronomer Theodore Dunham, Jr., in the early 20th century. Together, they developed a method for measuring the radial velocities of stars using spectroscopy, which involves analyzing the light emitted or absorbed by celestial objects. This method allowed them to determine the speed at which stars were moving toward or away from Earth.
Foreskin Morbidity in Uncircumcised Males
Sneppen and Thorup, Pediatrics 2016
"In our patient population, we found that 7.2% (95% CI 3.4–11.0) were diagnosed with autism spectrum disorder (ASD) as a concomitant disease (Table 3). A recent Danish study calculated the prevalence of ASD in Denmark to be 1.5% among boys."
Association found between ASD and childhood penile surgeries. This is reference 1, next toot has #2.
Ritual circumcision and risk of autism spectrum disorder in 0- to 9-year-old boys: national cohort study in Denmark
Frisch & Simonsen, 2015 J. R. Soc. Med.
"We confirmed our hypothesis that boys who undergo ritual circumcision may run a greater risk of developing ASD. This finding, and the unexpected observation of an increased risk of hyperactivity disorder among circumcised boys in non-Muslim families, need attention"
Two different research groups have now found a relationship between early childhood penile surgeries and autism spectrum disorder. The two different studies had different goals, different recruitment approaches, different study variables, and yet the relationship between ASD and circumcision remains quite striking!
For boys undegoing penile genital cutting before age five, the risk of ASD is even higher.